package sysu.el.array;

public class Bomb {
	public Bomb(){
	}
	
	public int counter;
	public void start(int num){
		counter = num;
	}
	
	public boolean survive(){
		return counter != 0;
	}
	
	public void tick(){
		counter --;
	}
	
	public static Bomb c4 = new Bomb();
}
